Replace the model 570 or 9116-561 service processor cable

You might need to replace the service processor cable from the server. Use the procedure in this section to perform this task.

To replace the service processor cable, complete the following steps:

Align the pins on the back of the service processor cable handle with the alignment holes on the back of one of the system units as shown in the following figure. Using the handle, push the cable connector in place. Repeat the process for any other 570 or 9116-561 system units.

Figure 1. Model 570 or 9116-561 service processor cable

Graphic showing the installation of a service processor cable.

For assistance, use the following tables as a guide:

Table 1. Replacing cables when adding a redundant service processor to the 570 on the Primary Service Processor (#1)
Service processor ports	One SP and one HMC	One SP and two HMCs	Two SP and one HMC	Two SP and two HMCs
T1 (HMC)	to HMC #1 from hub #1***	to HMC #1 from hub #1	to HMC #1 from hub #1	to HMC #1 from hub #1
T2 (HMC)		to HMC #2 from hub #1	jumper to SP#2 T2	to HMC #2 from hub #2
T3 (SPCN)	to first I/O device*	to first I/O device*	to first I/O device*	to first I/O device*
T4 (SPCN)	to last I/O device**	to last I/O device**	jumper to SP#2 T3	jumper to SP#2 T3

Table 2. Replacing cables when adding a redundant service processor to the 570 on the Secondary Service Processor (#2)
Service processor ports	Two service processor and one HMC	Two service processor and two HMCs
T1 (HMC)	to HMC #1 from hub #1	to HMC #1 from hub #1
T2 (HMC)	jumper to SP#1 T2	to HMC #2 from hub #2
T3 (SPCN)	jumper to SP#1 T4	jumper to SP#1 T4
T4 (SPCN)	to last I/O device**	to last I/O device**

* First I/O system in a single loop configuration with jumpered links.

** Last I/O system in a single loop configuration with jumpered links.

*** The Ethernet hub is optional. You can choose to connect the service processor directly to the HMC.

Reconnect all system power cables.
Start the system or logical partition.
Verify the installed part.